package method;

public class Demo04 {
    //递归思想
    public static void main(String[] args) {
        System.out.println(f(5));
    }
    //1!   1
    //2!   2*1
    //3!   3*2*1
    //4!   4*3*2*1
    //5!   5*4*3*2*1
    public static int f(int n){
        if (n==1){
            return 1;
        }else{
            return n*f(n-1);
        }
    }
}
